title: How to improve the signal-to-noise ratio for circular polarizers consisting of helical metamaterials?
abstract: In this paper, we proposed new structured metamaterials with multi-helical nanowires to construct circular polarizers with higher S/N ratios. Compared with the single-helical ones reported by J. K. Gansel et al. [Science 325, 1513 (2009), Opt. Express 18, 1059 (2010)], which has a lower S/N ratio (~10 dB) due to the high intensity conversion, the circular polarizers with the multi-helical structures have average two orders higher S/N ratios (~35 dB). Simultaneously, other optical performances, such as operation bands, average extinction ratios, are also improved.
authors.affiliation: Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Hubei, China. zyang@mail.hust.edu.cn
authors.forename: Zhenyu
authors.initials: Z
authors.lastname: Yang
authors.forename: Ming
authors.initials: M
authors.lastname: Zhao
authors.forename: Peixiang
authors.initials: P
authors.lastname: Lu
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008420:Manufactured Materials; D008422:Materials Testing; D012031:Refractometry / Q000295:instrumentation*